System of ventilation.



M. G. HUBBARD.

SYSTEM 01? VENTILATION.

APPLIUATION FILED NOV. 25, 1907.

929,767. Patented Aug.3,1909.

O 2 SHEETSSHEBT 2..

UNITE STATES rA'rnNr OFFICE.

MOSES e. HUBBARD, or CHATHAM, NEW JERSEY, ASBIGNOR, BY'MEsNEASSIGNMENTS, T0

MONARGH VENTILATOB coMraNY, or NEW YORK, N. Y., a CORPORATION OF NEWSYSTEM 01" VENTILATION. J

, Specification of Letters Patent. 7 Application fled November 25, 1901.SHIN in. 403,682.

Patented Aug. 3, 1909.

To all whom it may conzern:

, New Jersey, have invented certain new and useful Improvements inSystems of-Ventilation, of which the following is a specification.

In ventilatin rooms of buildings as now practiced, whet er'by thenatural draft system or by the force draft system, the heated and foulair is removed from the room' by a ventilator arranged at or near thetopof the room, while the fresh air to take the place of the exhausted airis supplied to the room at or near the floor. This disposition oftheoutlet for the heated foul air, and of the inlet for the "cool freshair is a-natural one because the heated air collects at the top of theroom,

and the coldair naturally gravitates to the bottom of the room; but suchnatural arrangement is objectionable for the reason that itis difficultto maintain the desired I tem erature in the room, and the occupants ofte room are subjected to drafts incident to the admission of cold air tothe coldest part of the room.

' I have devised a system of ventilation which operates exactly thereverse of the natural systems above referred to in that fresh cold airis supplied to the top of the room where the air is warmest, andvitiated air s led from the room at a point or points nearer to thefloor, and preferably adjacent to the level; into which the vitiated airis exhaled into the room by the occupants. By

throwninto the warmest stratum of air in the room and becomes temperedby its con-' tact with the warm air and causes a complete circulation ofthe air in the room in a direction ordirections controlled by suitabledevices, the ,vitiated air being forced out through a ventilator lowerdown in the room. In this manner the air of the room can be kept.perfectly ventilated and the tempera ture retained at the desired 1pointwithout so much waste of heat, and at t e same time the occupants of theroom will not be subjected to cold drafts.

In carrying my invention into practice]: prefer to employ ventilators atthe top and ottom of one or more windows in a room.

The ventilator arranged at the to of the I afford a casin wide shallowfresh air duct, suitably mounted 1n the window opening by means of afillmg block which supports the fresh air duct, said duct be1ngconformed into cylindrical shape at Its inner end within the room to for'a motor-driven fan by which'fresh air is blown directly into the roomadjacent to the ceiling. By an arrangement of shutters or slats arrangedacross the outlet opening of the fresh air duct, the direction andvolume of the incoming current of fresh air can be regulated at will.The ventilator at the bottom of the window openmg may be of any suitableform to ermit the free outlet of the vitiated air expel ed by theentrance of the fresh air forced into the top of the room by the fan.

In order that my invention may be fully understood, I will firstdescribe the same with reference to the accompanying drawmgs, andafterward oint out the novelty more particularly in t e annexed claims.

In said drawings Figure 1 is a sectional view of a room illustratlng myim rovcd system of ventilation. Fig-2 is a ront elevation of the upperportion of a window show mg my improved forced draft ventilator arrangedtherein. Fig. 3 is a vertical transverse sectional view of the same.transverse sectional view taken on the line 44 of Fig. 3, and Fig. 5 isadetail view illustrating the brake for the adjustable slats orshutters.

In carrying out my improved system of ventilating rooms, which will behereinafter fully explained I mount a power driven ventilating fan in aventilating casing in the u p per part of a window 0 enlng, and asuitable ventilator to permit the free outlet of the vitiated air in thebottom of the window openlng'. j

In addition to the general system of ventilation, my invention includescertain features of novelty in the construction and arrangement of theforced draft ventilator for supplying fresh air to the u er part of theroom to be ventilated, and Wlll first describe the constructionandarrangement of this .forced draft ventilator, and afterward refer tothe general system of ventilation with which the saidventilating'apparatus is preferably employed.

Fig. 4 is a 1 is a window opening; 2 is the upper sash,

and 3 the lower sash.

I 5 is a filling bar or lilockarrangedacross the window opening lhbovethe to rail'of the upper sas i 2 and completely fi mg the window openingabove the sash. This filhng block or bar 5has a wideshallow openin cutthrough it to receive the wide shallow lresh air inlet duct or pipe ofrectangularob- This inlet pipe 10 has its long cross section. outer endprotected by an incline wire screen 1 1 of line mesh, the upper wall ofthe pipe or conduit extending beyond the lower wall as shown so as toprovide a suitable overhang to the entrance of the ventilating ipe.

The wide shallow pi e 10passes throng the window opening an is so portedat'its inner end by any suitable brac "et fasten1ng,1such as shown at15, which rigidly connects the ipe to the inner face of the windowframe. 7 his fresh air inlet pipe 10 is gradually contracted in width anextended m height to 'form at its inner end a cylindrical pipe or casing20, in which is mounted the ower driven ventilating fan whichwill now ede scribed.

25 is a yoke of inverted ueshape supported at the top withinthecylindrical extension 7 e 20 of the ventilating pipe by means of athreaded bolt 26 which passesthrough the casing 20'and yoke 25, and hasmounted on its inner end a cylindrical" rubber block 27 secured in placeby a nut 28. The yoke 25 l I is by this means supported uponthe rubbercushion 27. The ends of the yoke 25 project downwardly adjacent to thevertical bolts or posts 30 suitably mounted upon lu s 31 formed on theinner face of the casing,

said bolts 30 supporting cylindrical rubber ings.

blocks 32 against which the ends of the yoke 25 are yieldingly securedby elastic bands 33 a as shown particularly in Fig. 4 of the draw- Bythis means I provide a sound insulating cushioned frame or yoke forsupportingthe motor-driven fan, so that practically all the noise of themotor and fan is avoided. Itwill benoticed that the frame or yoke isfirmly held against displacementeither'vertically or laterally.

40 is a faniinounted uponthe shaftor axle draw air in through theventilating pipe 10 and force it into the room adjacent to the ceilin 1I A RIIIPBI ring 50 isfitted upon the outer end oi the cylindricalcasing 20 and held in position upon the casing by its frictional contacttherewith so as toremainin anyadjusted positionthereon. This damperring50 supports aplurality of transverse slats or shutters 51, each one ofwhich is mounted some upon a shaft 52 suitably lournalcd at its ends Yfingers 54 mounted upona' rod .55 which projects downwardly into theroomin con 7 venientposition formanipulation.

s at or shutter 51 is One of the shafts 52 hasisecured upon itsvoutwardly projecting'ends the friction plates a or brakes 56 as shown inFigs; 2 and 5, said friction plates 56 engagingtheouter surface of thedaniper ring 150 for holdi *allof the connected shutterplates' 51 in tiedesired adjusted position; It will be observed from i this arrangementthat the slats or shutters 51' may be adjusted to any angular relationin a the outlet opening of the ventilating pi eyes as to direct theincoming air upward y or downwardly or horizontally, or they may icompletely close the same. Byihaving the slats or shutters closed moreor lessfthe uantity of aircan also be regulated, al-

served t t ough I prefer to regulate the quantityof fresh air suppliedby the speed of the motor which operates the fan. It'will also be ob ratby adjusting the damper ring 50 circumferentiallyupon the casing 20, Ican" deflect the incoming current of air laterally in the room to suitan specific location of the window intwhic the ventilator is mounted.

Referringnow more particularly to 1 a of the drawings, it will beobserved that my improved forced draft ventilator is mounted at the topof the window opening for supplyin fresh airto the upper part of theroom; and t at a foulair outlet ventilatoris shown at 70 located at thebottom of the window opening to permit the exit of the-" foul air drivenfrom theroom by the supply of fresh air. This ventilator 70 at thebottom of the window opening may be of anysuitable construction, but. ispreferably of the specific construction shown in myifiplication filedNovember 25 1907, Serial o. 403,631.

Thelgeneral course of the air in iny improved systemof ventilation isindicated by the. arrows in Fig. 1. The fresh air forced a into the roomby the motor-driven fan is a thrown directly into contact with theheated air of the room and is thereby: considerably tempered, and soonassumes the, general" temperature of the air inthe room.- The vitiatedair is driven beforethein'coming ar rent of fresh air as indicated bythe arrows,

and forced out through the ventilator at the bottom of the windowopening. The quantity of air supplied to the room may be regulated bythe speed of the motor-driven fan, and also by the adjustable dampers ofthe in j opt the occupants of the room to too great a a draft, althoughthe draft will not be ordis'of let and outlet ventilators. The quantityof v a air supplied should not be sufficient to sub- This arrangement isalso important because it economizes the use of heat, since the heatfrom the exhausted air 18 utilized for warmlng up the fresh alr, beforethe exhausted air is expelled from the room.

The exact arrangement and construction. of the forced draft ventilatoradapted to be mounted at the top of a window opening is another imortant feature of my invention; the broad s allow ventilating conduitbeing readily mounted above the upper sash of a windowand securedinplace upon the win-- dow frame without requiring any alteration in thewindow or any considerable difficulty in fastening the parts in place.The exact shape of this fresh air sup ly conduit is of importance inthat it affor s a proper casing for the direct connected motor-drivenfan by which the air is supplied to the room. The specific mounting ofthe fan is of im ortance in doing away with the objectiona ale noise ofthe fan which would certainly result if it were directly mounted uponthe metal casing of the fresh air conduit. -The specific ar, rangementof adjustable slats or shutters for controlling the direction andquantity of the air is also of importance in. carrying out my invention.

It will be understood that a motor-driven fan, to meet the requirementsof my invention, should ordinarily be equip ed with a suitablecontroller switch by wine 1 the speed of the fan can be regulated to anicety, so as to get the best results with the least expense. I have notshown sucha controlling switch,

since they are well known in the art.

What I claim is:

1. AWindow ventilator comprising a wide shallow air duct or conduitadapted to extend through a window or"- other wall opening and conformedat its inner end into approximately eylindrical shape, and a motordrivenfan mounted in the cylindrical portion of said conduit.

- 2. A window ventilator comprising a wide shallow-air duct or conduitadapted to tend through a window or other wall opening and contractedlaterally and expanded Vertically at its inner end, and a motordrivenfan mounted in the inner portion of said conduit.

3. A window ventilator comprising a wide shallow air duct or conduitadapted to extend through a window or other wall opening and conformedat its inner end into cylindrical shape, a filling block fitting thewindow opening and supporting said conduit, and a motor-driven fansupported in the cylindrical portion of'said conduit, and means forregulating saidfan.

' 4. A window ventilator comprising a wide shallow air duct or conduitadapted to ex tend through a window or other wall opening and conformedat its innerend into cvlindrieal shape, a window filling block in whichsaid conduit is mounted, a motor driven fan supported 1n the cylindricalportlon of said conduit, and means for regularing the direction andquantity of air passing through said conduit.

5. In a ventilator, the combination of an air supply pipe or conduit, amotor-driven fan arranged in said pipe or conduit, a yoke or frame u)011 which said fan is mounted, and a plura ity of elastic cushionsinterposed between the yoke and conduit at a plurality of points. I

6. In a ventilator, the combination of an air supply pipe or conduit,with a motordriven fan supported therein, an inverted U-shaped yoke orframe upon which said fan is mounted, an elastic cushionsupporting saidU-shape frame at top, and elastic cushions interposed between the pipeor conduit and the legs of said yoke or frame for preventing lateraldisplacement of the fan, substantially as set forth.

MOSES dyi-lunnium.

Witnesses: l l WM. l KNIGHT,

Josurn J. Summer.

